Just got back from a dirt biking trip. pulling a 6 x 12 enclosed with 4 bikes, gear, tool chest, etc. probably around 3000 pounds. Got an average of 12.2 going 82 mph. This is adjusted for odometer error. Not as good as I had hoped but we were going fast in a lifted pickup. The other truck was an lb7 with the almost identical load, he got just over 13 but he was going around 85 to 86 mph.